Unfortunately i don't think that we will have something like this in GTA V, mainly because GTA V will be released in September of this year and nobody said anything about more real car damage physics or something like that.

Maybe in a next future we can have a GTA style game with this kind of reality for cars, this would be awesome.

You can try the Free Tech Demo of BeamNG to have the feeling of a more real car damage, enter this site and click in TechDemo or just click here. This version goes with one map only for demonstration with some ramps and obstacles but you can use the World editor (F11) to edit the world and make an more dangerous ambient ^^

Also you can buy the full version that is constantly being updated with new cars, maps and improvements here, it's only $15 and you can have a lot of fun kidding with the car physics in cool maps and have access to all features in the World editor mode. The limit is your imagination (and computer processing capacity lol):

First we need an object of the class Menuz, each menu need an object, so, if i want an submenu i need to create an object for him, in the object creation we must set the title of the menu, in this example i will create an menu and two submenus:

Now we need to add the items, each item can have one optional image:

Next step is call the Tick event that will draw the menu in a Graphics event:

In a future version i will change this to native calls to avoid Graphics event use.

Next step is show the menu using a hotkey for example:

Now we need to check if user is controlling the menu, if user press Up/Down the menu keyDown event will change menu index and update screen, if user press Enter keyDown event will return true so we can decide what to do:

How to Uninstall the mod or install less modded anims
To uninstall the mod and restore your anims you need to do the following:

Download the pack to restore anims (up there) and use OpenIV for easy install or:

First go to your gta Scripts folder and remove the file DualWielding.net.dll, this will disable the script.

Second open the .oiv file with Winzip or WinRar, open the folder "contents", "anims to replace" and you will see some folder that start with "backup.":

Inside those folders you will find the original anims for GTA IV, EFLC (main), TBoGT and TLaD, now use OpenIV or SparkIV to restore those files :)

Now, if you want install only selected anims, you can install the Package, and restore only the anims that you want normal, and in the script menu (Insert hotkey) you can enable or disable the desired gun.